shuf: refuse multiple input ranges and multiple output files

src/uu/shuf/src/shuf.rs

@@ -120,7 +120,6 @@ pub fn uu_app() -> Command {
         .version(crate_version!())
         .override_usage(format_usage(USAGE))
         .infer_long_args(true)
-        .args_override_self(true)
         .arg(
             Arg::new(options::ECHO)
                 .short('e')
@@ -168,14 +167,16 @@ pub fn uu_app() -> Command {
                 .short('r')
                 .long(options::REPEAT)
                 .help("output lines can be repeated")
-                .action(ArgAction::SetTrue),
+                .action(ArgAction::SetTrue)
+                .overrides_with(options::REPEAT),
         )
         .arg(
             Arg::new(options::ZERO_TERMINATED)
                 .short('z')
                 .long(options::ZERO_TERMINATED)
                 .help("line delimiter is NUL, not newline")
-                .action(ArgAction::SetTrue),
+                .action(ArgAction::SetTrue)
+                .overrides_with(options::ZERO_TERMINATED),
         )
         .arg(Arg::new(options::FILE).value_hint(clap::ValueHint::FilePath))
 }

tests/by-util/test_shuf.rs

@@ -48,6 +48,22 @@ fn test_zero_termination() {
     assert_eq!(result_seq, input_seq, "Output is not a permutation");
 }
 
+#[test]
+fn test_zero_termination_multi() {
+    let input_seq = vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+    let result = new_ucmd!().arg("-z").arg("-z").arg("-i1-10").succeeds();
+    result.no_stderr();
+
+    let mut result_seq: Vec<i32> = result
+        .stdout_str()
+        .split('\0')
+        .filter(|x| !x.is_empty())
+        .map(|x| x.parse().unwrap())
+        .collect();
+    result_seq.sort_unstable();
+    assert_eq!(result_seq, input_seq, "Output is not a permutation");
+}
+
 #[test]
 fn test_empty_input() {
     let result = new_ucmd!().pipe_in(vec![]).succeeds();
@@ -235,6 +251,45 @@ fn test_repeat() {
     );
 }
 
+#[test]
+fn test_repeat_multi() {
+    let repeat_limit = 15000;
+    let input_seq = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+    let input = input_seq
+        .iter()
+        .map(ToString::to_string)
+        .collect::<Vec<String>>()
+        .join("\n");
+
+    let result = new_ucmd!()
+        .arg("-r")
+        .arg("-r") // The only difference to test_repeat()
+        .args(&["-n", &repeat_limit.to_string()])
+        .pipe_in(input.as_bytes())
+        .succeeds();
+    result.no_stderr();
+
+    let result_seq: Vec<i32> = result
+        .stdout_str()
+        .split('\n')
+        .filter(|x| !x.is_empty())
+        .map(|x| x.parse().unwrap())
+        .collect();
+    assert_eq!(
+        result_seq.len(),
+        repeat_limit,
+        "Output is not repeating forever"
+    );
+    assert!(
+        result_seq.iter().all(|x| input_seq.contains(x)),
+        "Output includes element not from input: {:?}",
+        result_seq
+            .iter()
+            .filter(|x| !input_seq.contains(x))
+            .collect::<Vec<&i32>>()
+    );
+}
+
 #[test]
 fn test_file_input() {
     let expected_seq = vec![11, 12, 13, 14, 15, 16, 17, 18, 19, 20];
@@ -292,6 +347,24 @@ fn test_shuf_invalid_input_range_three() {
         .stderr_contains("invalid input range: 'b'");
 }
 
+#[test]
+fn test_shuf_multiple_input_ranges() {
+    new_ucmd!()
+        .args(&["-i", "2-9", "-i", "2-9"])
+        .fails()
+        .stderr_contains("--input-range")
+        .stderr_contains("cannot be used multiple times");
+}
+
+#[test]
+fn test_shuf_multiple_outputs() {
+    new_ucmd!()
+        .args(&["-o", "file_a", "-o", "file_b"])
+        .fails()
+        .stderr_contains("--output")
+        .stderr_contains("cannot be used multiple times");
+}
+
 #[test]
 fn test_shuf_invalid_input_line_count() {
     new_ucmd!()